Head to head
Brian James C4 Blue vs Ifor Williams LM146
The Ifor Williams LM146 is rated 900kg heavier gross. The Brian James C4 Blue is 40kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams LM146 is rated 900kg heavier gross.
- Unladen weight: the Ifor Williams LM146 weighs 40kg more empty.
Specifications side by side
| Brian James C4 Blue | Ifor Williams LM146 | |
|---|---|---|
| Gross weight | 2,600kg | 3500kg |
| Unladen weight | 695kg | 735kg |
| Bed length | 5.0m | - |
| Bed width | 2.0m | - |
| Overall length | - | 5.60m |
| Overall width | - | 2.10m |
| Bed | - | 4.23m / 13'9" ((internal) length); 1.98m / 6'5" ((internal) width) |
| Payload | - | 2765kg |
| Tyres | - | 195/60R12C |
Sources: Brian James C4 Blue, Ifor Williams LM146. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the C4 Blue if...
- you want one that is 40kg lighter empty
A twin-axle open car transporter built to carry one road or track car behind a family car or 4x4. Track-day drivers and small vehicle traders hire it for moving a single car without the cost of an enclosed trailer.
Full C4 Blue specifications →Buy or hire the LM146 if...
- you want one that is rated 900kg heavier gross
The LM146 is a general-purpose flatbed aimed at landscaping, construction and plumbing trades that need a long, wide load bed with a high payload on a single 3500kg-braked chassis. It is used where loads are bulky or awkwardly shaped rather than plant machinery, which typically goes on the ramped GX range instead.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
- G-Tec Trailers - Thetford, Holme Hale
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Brian James C4 Blue and the Ifor Williams LM146?
The Ifor Williams LM146 is rated 900kg heavier gross. The Brian James C4 Blue is 40kg lighter empty. The Brian James C4 Blue is a twin-axle car transporter trailer; the Ifor Williams LM146 is a a twin-axle flatbed goods trailer in the heavier-duty LM range..
Which is lighter, the Brian James C4 Blue or the Ifor Williams LM146?
The Brian James C4 Blue. It is 40kg lighter empty than the Ifor Williams LM146.
Can I tow the Brian James C4 Blue or the Ifor Williams LM146 on a car licence?
Yes, as far as the licence goes. Both are rated at or under 3,500kg gross, and a car (B) licence has covered towing up to 3,500kg since 16 December 2021. Your car still has to be rated to tow the loaded weight - check the handbook or the VIN plate.
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